data transmission

Practical Guanella 1:1 balun - This article proposes a lossy transmission line model of a practical Guanella 1:1 balun that is effective for all frequencies within and immediately adjacent to the pass band

Transmission lines - Transmission lines and measurement of their characteristics

Radio QTH practice exams - Call sign lookup system based on FCC database allow lookup for vanity call signs, practice exams and simple online qsl card creation

illinoisdigitalham : Digital Ham Radio - dedicated to the discussion & development of ALL amateur / ham radio Digital Voice & Data communication

ExTech - Electronic test and measurement; digital multimeters, clamp-ons, portable printers, meters and dataloggers.

About Digital Smart Technologies - A general guide to D-STAR. The purpose of D-STAR is to allow HAM Radio operators to speak further and clearer using digital voice while sending data from 1200 BPS on up at the same time.

Configuring an Icom ID-1 DSTAR radio - Icom dstar digital data configuration for simplex

DStar- is anybody else worried about this? - D-Star is being promoted as a new digital voice transmission mode "For the second century of Amateur Radio" - but does it really fit into the spirit of the hobby?

Low Frequency operations by W3EEE - A squint at the world of LF This website was initially thrown together to provide ready availability to data being collected from the measurement of a transatlantic LF (Low Frequency) path.

Low Frequency Transmission Modes - Article by W1TAG on operating modes used on low-banding. The 2200 meter band (135.7 - 137.8 kHz) is only 2.1 kHz wide, so voice work on SSB or AM is out. Find out the best modes on LF

GB4FUN Satellite set-up information - Antenna installation and operating guide

SWL DX Cluster - Web cluster for swl's. With many features, including filters, search, SWL Database, lookups

Master.dta Editor - Freeware windows program by WE3NEA that allow to view and edit the Master Callsign Database file used in many contesting programs, import and export callsigns, auto-download announced DX operations.

D-RATS - D-RATS is a small application designed to provide data communication capabilities with D-STAR radios. It supports text chatting, file transfers, position reporting and mapping, and much more! It is written in Python using GTK to run on multiple platforms.

D-StarLet - D-Star Radio Messaging System - A web-based text messaging application using D-Star digital data technology. Client server environment, where server can run linux windows or macos os with apache tomcat by Dean K. Gibson.

D-StarCom - A simple command-line-based program for the exchange of common data between D-Star radios

CQRLOG for Linux - CQRLOG is a Linux advanced ham radio logger based on Firebird database. Provides radio control based on hamlib libraries.

HF software digital modes for linux - This software allows a standard PC soundcard to be used as a shortwave data "modem". The whole processing is done on the main processor CPU. Support RTTY Amtor (Sitor) and Pactor 1 by Thomas Sailer, HB9JNX/AE4WA

Ham Radio for HanDBase - PocketPC mobile logging database for Amateur Radio operators for HanDBase

Kenwood MCP-1A for TH-K2 Series - TH-K2AT / TH-K2E / TH-K2ET / TH-K4AT / TH-K4E Memory Control Program You can use this software to create data such as memory channels and menus on a PC by connecting the TH-K2/K4 transceiver to the PC.

HRIS2 Priority listing - This program can be used for statistics of sending QSL. Also it is possible to use her as the help data on DX-ing (DX VIA, ADDRESS MNG, IOTA-ped.) The information is brought in base delivery of the program on " DX via " and " Address QSL mng " from bulletins 425 (with 205 on 858) by US7IB

NJ7P Tube Database Search - This database contains data on thousands of tubes

Tube Data Sheet Locator - Resource for finding data on vacuum tubes.

Frank's Electron tube Pages - Tube databases in different languages

EDUCYPEDIA Tubes datasheets